I have some experience with the newer MF gear. The 6si will easily drive the OP's speaker. The only problem is that ever since they started making things in Taiwan, the SQ sucks. I haven't heard the newest si version yet, so maybe its improved. Definitely listen to it first.
Speaker Power Requirements
I have purchased PSB Synchrony One tower speakers, which I plan to use with PS Audio Trio C-100 integrated amplifier @ 100 W per channel into 8 ohms. Do you think this amp has enough power to bring out the dynamics/capabilities of the 5-driver PSBs? Or should I consider a higher-powered integrated, such as Musical Fidelity's M6si with 220 W per channel? I am playing at medium loudness in a mid-sized living room of about 60 x 30 feet. What are your thoughts? Thank you, Randy